Wednesday, 24 April 2013

Nowadays Internet is used far and wide. At first we were dependent on the wired technology i.e. we were using the internet at home or office with a wire came from the isp end. But as the time passed away, technologies got updated and wireless technology came into existence.

To use wireless technology, we need to have wireless device at home. These wirelss device generates the wifi signals that are received by our client wireless devices such as wireless LAN of the laptop. These wireless devices which route the internet signals to the wireless client device, are called Wireless Routers.

Types of Wireless Routers

Cisco RoutersCisco is the most famous and popular company manufacturing wireless routers on a large scale. Cisco can be taken as the innovator of this technology. It made many types of industrial lever routers, switches, and security appliances. Cisco is also famous for its domestic wireless routers like cisco 871W series router.

Linksys Wirelss

Another brand which is famous for providing endless wireless technologies. There are many models like EA 6500, EA 4500, EA3500, 2700 etc. All work well and provide very ease to access and configuration.

Belkin Wireless RoutersIt is another very popular brand in the category of wireless routers. It provides user a very convenient and easy way to connect to the internet. It provides reliable security options that at all times avoid any type of cyber invasion.

NetgearNetgear is a famous name in the field of wireless technology. Netgear offers dominant, attractive networking product for home internet user, it can be hanged on any wall on the house and it provide a very convenient way to work at home.

AppleApple's wireless router called EBS is also very good wireless device. These routers can work very well with windows and Macintosh operating system.

Buffalo G54 Air StationThis brand is slightly less popular and is not very much in use. Some of the user supposed that its configuration is rather difficult. But it's a good router to provide this wireless signal strength.

Wireless technology is growing day by day. And all manufacturers are in competitions to provide the best facilities to the customers. And its good for all of us who loves wireless.

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Monday, 8 April 2013

The best thing you can do is to keep a backup of all your important data and files regularly. Keep the copy of data offsite from the original copy. Don’t keep your backup copy on the same partition of computer.

Follow these simple tips to prevent data loss.

Practice good working habits

Make some good habits while working on computers that can prevent the loss of data. Some of it are:

Create separate partition for your programs and data. Some time there can be crash with your program drive. So in that case, you can even have many chances to keep your data out.

Keep your files and folders with appropriate name.

If you can, don’t encrypt your files and folder, because in case of damage, recovery will be more difficult.

If you are not using your computer, don’t keep it on or in power safe mode. Just shut it down.

If there is large amount of data in your computer then keep it with uninterrupted power supply with a UPS backup. Because sudden failure of power, can damage your operating system and that thing can lead you to the data loss.

Keep your system in shaded, dust free and well ventilated area

Never place your computer where it is directly exposed by the rain, sun or humidity. It can harm your computer.

Do not over tweak your systemDon’t try to play with computer’s registry values or system files till then you are not well known to them. A wrong modification can lead your computer to the no booting stage and you can face data loss.

Avoid moving computer when it is operation

Be endurable with the time. Don’t try to move your computer or notebook when it is on or something is running on it. It can create unexpected problem such as crash of the hard disk.

Safeguard your computer

Don’t put your notebook or computer in the unknown network. It can be risky. Because data can be theft or damage by the persons or program which are able to access your data after entering that network.

Practice Disk Maintenance

Perform disk defragmentation once every few months. Such process ensures the data is arranged more contiguously and is easier for access or recovery.

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Wednesday, 3 April 2013

A computer virus is a program that can replicate itself and spread from one system to another. Not all PC viruses behave, replicate, or infect in identical way. There are different types of computer viruses and Malware. Below I have listed number of the foremost common kind of computer viruses.

Types of Computer Virus

Trojan Horse Virus

A Trojan virus is one of the most common and destructive computer virus which has the appearance of having a useful function. It is different from a normal computer virus as Trojan horse virus does not replicate themselves. One of the most insidious types of Trojan horse is a program that claims to rid your computer of viruses but instead introduces viruses onto your computer. Trojan virus can also create a backdoor on your computer that gives malicious users access to your pc, allowing confidential or personal information to be compromised.

A worm is malicious software program that can make copies of it self, it is made to spread via computer networks. It is one of the most dangerous forms of computer virus. It is mostly found in spam email attachments or messages that have executable scripts. Worm is also known as malware.

A virus can attach itself to the first part of the hard disk which is read by the computer upon bootup. These type of virus is normally spread by floppy disks. This typically occurs when users inadvertently leave a floppy disk in drive A.

Macro Virus

Macro viruses are computer virus that uses another application macro programming language to distribute themselves. They can infect documents such as Word Files or Excel Files. It causes a sequence of actions performed automatically without users consent.

Memory Resident Virus

A memory resident virus can attach itself to the computer volatile memory that is RAM. They are initiated from a virus which runs on the computer and they stay in memory after it's initiating program closes.

Rootkit VIrus

Rootkit virus is undetectable computer virus. Its main purpose is to gain control over your system. This virus is installed by Trojan virus and are normally disguised as operating system files.